cvsgraph(1) on Linux
The text 83256354de8e, as Debian 6.0 (Squeeze), Debian 5.0 (Lenny) shipped it.
A CVS/RCS repository grapher
Flags it lists
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-I -
-M -
-O -
-S -
-V -
-b -
-c -
-d -
-h -
-i -
-k -
-m -
-o -
-q -
-r -
-s -
-u -
-x